Liquid-heater.



PATENTE) AUGL im 1905.,

H. PELDMEEIL MQUID HEATER.

APPLIUMION FILED Mm.' 23.19%.

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No. 797,190. EAEENTEE v6.1.6, 1905. E. EE'EDMEIEE.

LIQUID HEATER.

APPLIOATION FILED MAY 23.1904.

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tllltrlllll @Y 'Arne PATENT GiiFlCE..

HARVEY FELDMEIER, 0F LITTLEFA'LLS, NEWv YORK, ASSIGNOR TO D. H. BURRELL& COMPANY, OF LITTLEFALLS, NEWT YORK.

LlGtUlD-"l-l EATEFL Specification of Letters watent.

Patented Aug'. 15, 1905 Application filed May 23, 1904. Serial No.209,225.

Be it known that l, HARVEY FnL1 Mifnn11z,a l citizen oi" the UnitedStates, residing at Littlc't'alls. in the county ot' Herkimer and Stateof New York, have invented new and uset'ul lnuirovements inliiquid-Heaters, oil which the following is a speciiication.

'lhis invention relates to that class et regenerative liquid-heaters inwhich theincoming cold liquid and the outgoing heated liquid move inopposite directions on opposite sides of a heat-exclninging wall orpartition,through which the cold and heated currents equalize theirtemperatures to a certain extent, so that the incoming cold liquidabsorbs heat Vfrom the outgoing heated liquid and cools the latter.

@ne object of the invention is to render the main parts ot theapparatusreadily separable by mounting the main parts upon independentsupports, one ol which isa movable truck or carriage, so that themovable part can be readily moved into engagement with the sta tionarypart in assembling the apparatus or away from the stationary part whenaccess is required to the interior ot' the apparatus l'or cleaning orother purposes.

Another object el this invention is to construct the regenerative andthe direct heating-surfaces in such manner that they are hig'hlyellicient and at the same time simple in construction, the directheatingsurfaces being' for these purposes located inside of the rotarypartition and the latter being' corrugated.

.ln the accompzmyingl drawings, consisting' oit' three sheets, Figure lis a Vfront end elevation of a liquid-heater embodying the invention.Fig. 2 is a vertical sectional eleva tion thereof. Fig. 3 is adiagrammatic sectional elevation showilig' the flow-passages and thedirection ot' How. Fig. a is a side elevation, on a reduced scale,showing' the movable part et the heater separated from the stationarypart.

Li ke letters of reference refer to like parts in the several figures.

The apparatus consists in the main features by which the lliowpassagesare formed ot' an inclosing casing A., having' an annular depression a,a core section or part B, havingI an annular core or projection whichextends into the depression (tandis arranged to leave a flow-spacebetween the annular walls pression a of the inclosing shell.

of these parts, and an annular heat-exchanging partition C, which isarranged in said flow-space about iinidway between the walls thcreotland which has theinlet l) for the cold liquid arranged on one side andthe outlet E Afor the heated liquid in the vicinity ol'I the inlet, buton the opposite side, so that the liquid passes from the inlet l)backwardly along` one side of said heat-exchanging partition C to thebottoni cil thereof, then forwardly, but still on the same side olt thepartition, to the edge c" thereof, then around the edge. then backwardlyon the opposite side ot the partition to the bottom thereof, and thenforwardly tothe outlet E, as indicatelfl by the ar rows in Figs. 2 and3.

The casing A is the stationary part ol. the apparatus and comprises arear head an annular front 'frame or ring u, both providml withsupporting legs or standards a, and a connecting shell or body a",having in its lace the annular depression u, which formed be tween theinner and outer annular walls a u" et' the shell. The front end ot' theouter wall ft is secured to the trent ring ft2, and this outer wall ispreferably surrounded by a jacket a", which is secured to the rear headand lront ring oi the casing' and it'orms a surroumling air ornon-conducting space e `tor the shell or body.

The central portion al oi'l the shell is secured to the front end oi: abearing-sleeve F, which p is secured to and projects `lorwardl y tromthe rear head M. The central portion ot the shell is preferably boltedbetween a flange j on the front end or' the bearing-sleeve and a `flangeon a bushing' f', arranged in the sleeve.

rlhe coresection l is the movable part ol the apparatus and is providedwith a 'front head t', which closes the front end ot the stationarycasing A and carries the hollow annular core which projects into theannular derlhe inner and outer walls b2 /f ot' this core are spaced fromand substantially parallel with the corresponding` walls u. ot' theshell. The At'ront head is provided with an enlarged central portion ornow-chamber t", which is surrounded by the base ol' the core andprovided with the inlet-nipple D, to which the inlet-pipe d isconnected.

The outer annular wall 7j" of the core is provided within the core withthe annular heating-chamber which extends Afrom the base or the frontend of the core toward the rear end or ridge thereof and forms a directheating-surface in the-outer annular wall of the core. This chamber issupplied with a suitable heating medium, preferably steam, by a pipe gand discharges the condensation by a pipe g.

The front head t of the eoresection is removably secured to the frontring r2 of the casing by suitable fastening devices, preferably, asshown, by levers H, arranged radially on the front head, with theirouter ends passing through loops /i on the head and engaging in holes inforwardly-projecting ears or lugs /L/ on the front ring of thestationary casing, while their inner slotted ends engage over stationaryscrews 71,2, projecting from the front head and provided with thumb-nutsif. By turning` the thumb-nuts the inner ends of the levers are forcedrearwardly, and as their outer ends are confined in the lugs/on thefront ring they bear on the front head and force the latter tightlyagainst the frontring of the casing. A tight joint is formed between thefront head 7) and the front ring fr, of the casing, preferably by apacking-ring' if, which is confined in an annular groove in the fronthead and against which the front ring of the shell bears. Any othersuitable fastening and packing devices may, however, be employed inplace of those described, and the described details of the casing andcore-section may also be varied in other respects.

The heat-interchanging partition C is shaped to correspond with theflow-space between the casing and the core-section and comprises in theconstruction shown in the drawings curved inner and outer annularportions c c, a curved bottom ce, located, respectively, between thecorresponding walls of the casing and core, and a front central portionc3, the partition having approximately the form of a deep annulartrough. The concentric portions c c of the partition are preferablycorrugated in a circumferential direction to in- ,crease the area of itssurfaces and to give the partition a better hold upon the liquid inrotating', while greatly strengthening the partition, thereby renderingthe partition more effective in imparting rotary motion to the liquidand reducing the liability of the liquid to coat the hot surfaces. Thispartition is secured to the inner end of a rotary shaft K, which passesthrough the bearing-sleeve F and is journaled in the front bushingj"therein and in a rear bushingf'z. The shaft is provided at its rear endwith tight and loose pulleys /if or other driving means. The front endof the shaft projects into the central flowchamber 0 of the front head.The partition is detachably secured to the front end of the shaft,preferably by a hub L. having' a tapering bore which is forced andsecurely held on the tapering portion of the shaft by a hand-wheel ornut Z, screwed on the threaded end of the shaft. The hub of thepartition is preferably provided with handles Z, by which it can bereadily manipulated.

The removable core-section is supported by a wheeled truck M of anysuitable construction, which, as shown, is provided at its front endwith standards in, braced and bolted or otherwise secured to the fronthead b of the core. The truck is provided with a handle ym, by which itcan be moved to insert the core into the casing or withdraw ittherefrom. Tracks fm2 are preferably provided for the truckwheels toinsure the proper position of the core in the casing and prevent injuryto the parts in moving the core-section. The latter can be Yreadilyremoved from the stationary casing with little exertion by simplydisconnecting the steam-suppl y pipe, releasing the fastening devicesconnecting the front head and casing, and pulling the truck away fromthe casing. After the core is withdrawn the partition can be detachedfrom its supporting-shaft by unscrewing the hand-wheel and can beremoved from the shell or body of the casing. Thus all of the surfaceswith which the liquid comes in contact are exposed and can be thoroughlycleaned with little trouble. Neither the core nor the stationary casingneed be lifted, and no cumbersome and unwieldy apparatus is required toremove the core.

1n the operation of the apparatus the liquid to be heated enters thecentral port-ion of the apparatus through the supply-orifice D andpasses first into the flow-chamber Z, then rearwardly between the innerconcentric portion c of the rotary partition and the inner wall Z22 ofthe core, then forwardly between the outer wall ZJ of the core and theouter or peripheral portion c of the partition and is heated to itshighest temperature by passing over the direct heating-surface. Theheated liquid then passes around the edge c4 of the peripheral portion cof the partition, then rearwardly between the peripheral portion of thepartition and the outer wall a of the stationary shell of the casing,and then forwardly between the inner portion c of the partition and theinner wall t5 of the shell to the discharge-pipe R, through which itleaves the heater. The liquid is kept in rapid motion in the flow-spaceby the rotation of the partition, whereby the liquid is prevented fromadhering to and coating the heated surfaces, and this effect is enhancedby the corrugations of the partition. The cold incoming and the heatedoutgoing liquid-currents'move in opposite directions on opposite sidesof the partition, which causes an eX- change of heat betweenthecurrents, resulting in heating the cool incoming liquid and cooling theheated outgoing liquid. The temperature of the liquid is thus firstraised by absorbing heat from the outgoing liquid until the directheating-surface is reached, then raised to the desired degree on thedirect heating-surface, and then lowered considerably before leaving theheater, whereby a large saving in heat is effected. The steam-charnberbeing arranged in the outer portion of the base of the core andSurrounded by the flowpassages, the peripheral portion of the rotarypartition and the outer portion of the outer casing is protected therebyto a large extent against radiation and loss of heat.

Vr'hile the casing is described as stationary and the core-section ascarried by the truck, an obvious reversal of the parts would be to mountthe easing on the truck and the coresection on a stationary support.

The apparatus is especially suitable for heating or pasteurizingmilk,but may be used for treating' other liquids, and can also, with butslight changes, be employed for cooling` liquids.

rlhe flow-space is provided with any wellknown or suitable air-vent forperl'uitting the escape of the air when the milk or other liquid to betreated is first admitted to the flowspace.

l claim as my inventi0n- 1l. lh e combin ation of a stationary,horizontally-disposed casing having an open upright end, aliorizontally-movable core which projects into the open end of saideasing and is separated therefrom by a flow-space, ahorizontally-nlovable truck or carriage on which said core is supported,means for circulating liquid through said flow-space, and meansforchanging the temperature of the liquid` substantially as set forth.

2. The combination ofastationary, horizontally-disposed casing having anopen upright end, a l'iorizontally-movable core which projects into theopen end of said casing and is separated therefrom by a flow-space, ahorizontally-nlovable truck or carriage on which said core is supported,means for circulating the liquid through said flow-space, means forheating the liquid, and a rotary partition arranged in said flow-spacebetween the casing and the core, substantially as set forth.

3. rlhe combination ofastationary, horizontally-disposed casing havingan open upright end, a horizontally-movable core which projects into theopen end of said easing and is separated therefrom by a flow-space, ahorizontally-movable truck or carriage on which said core is supported,a rotary partition defaehably mounted on said stationary casing andremovable therefrom when said core is removed, means for supplyingliquid to said `flow-space on one side of said partition and dischargingit therefrom on the other side of the partition, and means for changingthe 'ten'iperature of the liquid, substantially as set forth.

la The combination of a stationary, horizontally-disposed casing having'an open upright end, a horizontally-movable truck or casing, ahorizontally-disposed core which is secured to said truck or carriageand projects into the open end of said casing and is separated therefromby a flow-space, a rotary shaft journaled in said casing, a partitiondetachably secured to said shaft and arral'iged in said flow-spacebetween the casing and the core, means for supplying liquid to saidVHow-space on one side of said partition and. discharging it therefromon the other side, and a heating-claimber in said core, substantially asset forth.

The combinationofa stationary, horizontally-disposed casingl having anopen upright end, a horizontally-movable truck or carriage, a remm'ablehead for said a sing mounted on said truck, means for fastening saidhead to the open end of said casing, a core which is secu red to saidhead and m'ojects into said casing and is separated therefrom by aflow-space` a rotary heat-intere]langing partition arranged in saidflow-sl'mee between the casing and the core, means for circulatingliquid through said flowspac-i, and means for heating the liquid,substantially as set forth.

6. 'lhe combination of a statiomn'y, horizontally-disposed casingprovided with an annular depression in its open end, a head which closesthe open end of the casing and is detaehably secured thereto, an annularcore secured to said head and projeetiiig into said depression, `fromwhich it is separated by a flow-space7 a heatirig-chamber forming partof said core, a truck orcarriage which is movable toward and from saidcasing and on which said head is mounted, a rotary partition arranged insaid 'flow-space, a rotary shaft which is journaled centrally in saidcasing and to which said partition is detachably secured, and liquid-eirculating pipes connnunicating, respectively, with said head withinthe core and with said easing within said depression, substantially asset forth.

7. The combination of a stationary, horizontally-dismised casingprovided with an annular depression in its open end, a detachable headwhich closes the open end of the casing and is provided with a central'How-chamber, an annular core arranged on said head around said chamberand projecting into the depression of the casing, from which it isseparated by a flow-space, a rotary shaft journaled centrally in saidcasing and projecting into said lflow-chamber, a rotary partitiondetachably secured to said shaft in said flow-chamber and extendingtherefrom through the flow-siatee between the core and the casing, aninlet and an outlet for the liquid on opposite sides of the partition,and means for changing the tenuiierature of the liquid, substantially asset forth.

8. The cfsombination of an inclosing casing havingan annular depressionin its open end, an annular core projecting into said depression andseparated therefrom by a flow-space,

a rotary partition having the form of an annular trough arranged in saidHow-space and having its outer portion arranged outside of said core, aheatingchamber arranged in the outer portion of said core and forming adirect heating-surface adjacent to and inside of the free end of saidrotary partition, and means for circulating' liquid th rough saidflowspace, substantially as set forth.

9. The combination of a stationary, horizontally-disposed casingprovided with an annular depression in its open end, a detachable headwhich closes the open end of the casing and is provided with a centraliow-chamber, an annular core arranged on said head around said chamberand projecting into the depression of the casing, from which it isseparated by a flow-space, a rotary shaft journaled centrally in saidcasing, a rotary partition secured to said shaft and extending from saidshaft through the dow-space between the core and the casing, an annularheating-chamber arranged in the outer portion of the base of the coreand forming a direct heating-surface inside of the peripheral portion ofthe rotary partition, and means for circulating liquid through theflow-space, substantially as set forth.

l0. The combination of an inclosing annular casing, an annular coreprojecting into said casing and separated therefrom by a flowspace, anda rotary heat-interchanging partition arranged in said fiow-spacebetween said casing and said core and having its concentric portionprovided with corrugations, substantially as set forth.

11. rlhe combination of an inclosing casing' having an annulardepression in its open end, an annular core projecting' into saiddepression and separated from the casing by a Howspace, a rotarypartition arranged in said flowspace and having its concentric portionsprovided with corrugations, an inlet and an outlet for the liquid onopposite sides of said partition, and means for changing the temperatureof the liquid, substantially as set forth.

l2. The combination of an inclosing casing having an annular depressionin its open end, an annular core projecting into said depression andseparated therefrom by a fiow-space, arotary partition arranged in saidHow-space, said partition extending from its hub backwardly between theinner concentric walls of the depression and core and then forwardlybetween the outer walls of the depression and core and having itsconcentric portions corrugated, an inlet and an outlet for the liquid onopposite sides of the partition, and a heatingchamber arranged in saidcore and forming a direct heating-surface in the outer wall thereof,substantially as set forth.

18. The combination of an annular casing having an internal How-spacefor the liquid to be treated, means for changing the temperature of theliquid passing through the flowspace, and a rotary partition arranged insaid How-space and provided with eorrugations arranged in acircumferential direction, substantially as set forth.

fitness my hand this 13th day of May,

lQOL.

HARVEY FELDMEIER. Vitiiesses:

Looms BURRELL, EDWARD VILHELM.

